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| author | aarne <aarne@cs.chalmers.se> | 2005-12-20 14:20:42 +0000 |
|---|---|---|
| committer | aarne <aarne@cs.chalmers.se> | 2005-12-20 14:20:42 +0000 |
| commit | 25b31684378d3b0668b65939fc7b30b0c1e8d130 (patch) | |
| tree | 7ed3e007a8847096087a3593504aec526fedd455 /examples/systemS/Proof.gf | |
| parent | 774abf612d5cc3a099f229c9cc649c7c51979f2d (diff) | |
CS's system S
Diffstat (limited to 'examples/systemS/Proof.gf')
| -rw-r--r-- | examples/systemS/Proof.gf | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/examples/systemS/Proof.gf b/examples/systemS/Proof.gf new file mode 100644 index 000000000..06a6f1c68 --- /dev/null +++ b/examples/systemS/Proof.gf @@ -0,0 +1,23 @@ +abstract Proof = Formula ** { + + cat + Text ; + Proof ; + [Formula] ; + + fun + Start : [Formula] -> Formula -> Proof -> Text ; + + Hypo : Proof ; + Implic : [Formula] -> Formula -> Proof -> Proof ; + RedAbs : Formula -> Proof -> Proof ; + ExFalso : Formula -> Proof ; + ConjSplit : Formula -> Formula -> Formula -> Proof -> Proof ; + ModPon : [Formula] -> Formula -> Proof -> Proof ; + Forget : [Formula] -> Formula -> Proof -> Proof ; + + DeMorgan1, DeMorgan2 : Formula -> Formula -> Proof -> Proof ; + ImplicNeg : [Formula] -> Formula -> Proof -> Proof ; + NegRewrite : Formula -> [Formula] -> Proof -> Proof ; + +} |